15 results about "X chromosome" patented technology

The invention discloses an X-chromosome specific molecular marker of micropterus salmoides and application of the X-chromosome specific molecular marker. On the basis of a whole genome sequencing technology, the X chromosome specific molecular marker of micropterus salmoides is obtained. Aiming at the molecular marker, the invention also provides a detection primer pair and a detection method of the molecular marker, and by detecting the molecular marker, rapid and accurate screening of YY supermale fish individuals can be realized to obtain a YY supermale fish population. The obtained YY super-male fish group and a proper female fish group are jointly fed and bred, and then the micropterus salmoides all-male fingerling can be obtained. If the YY super-male fish group and the YY pseudo-female fish group are jointly bred and bred, largemouth bass offspring which is all YY super-male fish can be obtained. Compared with a traditional all-male breeding method of the largemouth black bass, the all-male breeding method of the largemouth black bass is beneficial to simplifying all-male breeding steps of the largemouth black bass, shortening breeding time, and beneficial to cultivation of all-male largemouth black bass fingerlings and popularization of single-male breeding of the largemouth black bass.

The invention discloses an SNP (Single Nucleotide Polymorphism) molecular marker related to a pig body length character and application, and belongs to the technical field of biology. The SNP molecular marker is located on a pig X chromosome, and an SNP site is located at the 467th basic group of a pig BHLHB9 gene coding region (A in ATG in the coding region is 1); the basic group of the SNP site is C / T missense mutation. The SNP molecular marker related to the pig body length character is disclosed for the first time, is used for distinguishing individuals with medium and short body lengths and individuals with long body lengths, is suitable for domestic pig breeds and foreign pig breeds, and is wide in pig breed application range. The method for detecting the genotype of the SNP molecular marker disclosed by the invention can be used for quickly and effectively predicting the body length of a pig in an early stage at low cost, has a wide application prospect in the aspect of improvement of a pig variety strain, and can obtain an excellent economic value.

A method for providing assistance in determining the fertility of a female subject according to the present invention comprises a step for generating information for determining the fertility of the female subject by using the proportion of cells in which an X chromosome has been lost in somatic cells collected from the female subject.

A sex chromosome typing method and apparatus, a device, a medium, and a product. The method comprises: first, on the basis of a Y chromosome concentration of a nucleic acid sample to be tested in a cfDNA sample to be tested, determining whether the nucleic acid sample to be tested carries a Y chromosome; in a branch of not carrying a Y chromosome, on the basis of an X chromosome concentration and an X chromosome concentration range, determining a sex chromosome type of the nucleic acid sample to be tested; and in a branch of carrying a Y chromosome, using the ratio of the X chromosome concentration to the Y chromosome concentration as a concentration ratio to be tested, and, on the basis of the concentration ratio to be tested and Cauchy distribution functions respectively corresponding to at least two preset sex chromosome types, determining the sex chromosome type of the nucleic acid sample to be tested, thereby solving the problem that conventional typing methods rely on a sample set, and reducing testing costs and maintenance costs while ensuring the accuracy of sex chromosome typing.

The present application relates to the technical field of sex chromosome STR identification, and particularly relates to an X chromosome STR locus composite amplification primer group, a 9-color fluorescent label composite amplification kit and application thereof.The composite amplification primer group comprises 45 pairs of specific amplification primer pairs, the 45 pairs of specific amplification primer pairs include 44 X chromosome STR loci and 1 pair of specific amplification primer pairs of a gender locus AMEL, and the nucleotide sequences of the primer pairs in the composite amplification primer group are shown as SEQ ID NO.1-90.The specificity of each primer in the composite amplification primer group is relatively strong, no primer dimer or interaction is generated during composite PCR amplification, the amplification efficiency difference of each pair of primers is relatively small, and the identification sensitivity is relatively high.The composite amplification primer group provides a molecular basis and core necessary reagent for simultaneously detecting 44 X-STR loci at a time.

Providing AAV-mediated targeting of miRNAs in the treatment of X-linked disorders. [Solution] This disclosure relates to the targeting of miRNAs to activate the expression of genes on an inactivated X chromosome. This gene therapy is useful for treating X-linked disorders, including Rett syndrome. This disclosure provides a novel gene therapy approach for treating X-linked disorders, such as Rett syndrome, which is caused by X-linked loss-of-function mutations. Polynucleotides and gene therapy vectors targeting one or more miRNAs known to inactivate one or more genes on the X chromosome are provided herein. The polynucleotides and vectors disclosed herein are designed to inhibit miRNAs and thereby reactivate the wild-type gene of interest on the X chromosome that has been inactivated.

Methods for correlating a genetic variant with intraretinal fluid as a marker of response to anti-VEGF therapy in age-related macular degeneration (AMD). Further methods for correlating a genetic variant with visual acuity, anatomical outcomes, or treatment frequency are disclosed herein. The genetic variants identified were found in a non-gene region on the X chromosome p.22.3 in the MICOM gene in the NTRK3 gene and in the ANK2 gene.

Aspects of this invention relate to a novel monoclonal antibody specifically designed to exhibit selective binding affinity towards antigens present predominantly in X chromosome sperm. The antibody is engineered for applications to sex select sperm for cattle breeding purposes.

The invention relates to a method for judging the correlation degree between fetal X chromosome concentration and each physical sign index of a pregnant woman, which comprises the following steps: acquiring prenatal detection data of the pregnant woman, including the proportion of fetal X chromosome free DNA fragments, detection weeks of pregnancy, the BMI value of the pregnant woman and other physical sign indexes of the pregnant woman; according to the range of different indexes corresponding to the obtained prenatal detection data of the pregnant woman, removing abnormal data in the range; the Spearman rank correlation analysis method is applied to the processed prenatal detection data of the pregnant woman to obtain the correlation degree between each sign index of the pregnant woman and the X chromosome concentration of the fetus, and the indexes are subjected to significance test. And performing normalization processing on the pregnant woman sign index data without abnormal values, establishing a correlation model of pregnant woman indexes and X chromosome concentration by adopting a grey comprehensive analysis method, performing cross validation with a Spearman analysis method, and determining a correlation analysis model of the fetal X chromosome concentration and the pregnant woman indexes. The invention aims to solve the problem of inaccurate detection result of a single statistical method.

The invention discloses a composite amplification detection system of X chromosome DIP polymorphic loci and application thereof, the composite amplification detection system comprises 50 X chromosome DIP polymorphic loci, a sex identification locus Amelogenin and two Y chromosome DIP loci, 15 loci of the 50 X chromosome DIP polymorphic loci can form 6 linkage groups, and 15 loci of the 50 X chromosome DIP polymorphic loci can form 6 linkage groups. And the method has higher forensic medicine application efficiency. According to the multiplex amplification detection system disclosed by the invention, a miniaturized amplicon (70-205 bp) is designed, so that accurate typing analysis on a degraded detection material in forensic practice is effectively carried out. Meanwhile, the multiplex amplification detection system is simple, convenient, low in cost and easy to popularize, and has important significance on individual identification and complex genetic relationship identification of East Asian population.

The application discloses a Trichiurus lepturus gender-specific molecular marker and a primer pair thereof. The application first excavates a DNA fragment with stable difference existing in the genomes of male and female Trichiurus lepturus, i.e., the sequence of the molecular marker is shown as SEQ ID NO:1, which exists on the genetic sex X chromosome of the Trichiurus lepturus and is absent on the Y chromosome. The sequences of the primer pair are shown as SEQ ID NO:2 and 3. A genetic sex identification method of the Trichiurus lepturus is established, and the genetic sex of the Trichiurus lepturus can be accurately identified, which lays a foundation for related genetic basic research. The application has the characteristics of wide application range, simple operation, high accuracy and the like, and has important application value in Trichiurus lepturus gender proportion monitoring and resource investigation.

The invention discloses a Pelteobagrus vachelli sex identification molecular marker, a development method and application, the Pelteobagrus vachelli sex identification molecular marker is located on a No.3 chromosome, the Pelteobagrus vachelli sex identification molecular marker is a deletion specific marker having a segment of 52bp compared with a Pelteobagrus vachelli X chromosome, and the nucleotide sequence of the deletion specific marker is as shown in SEQ ID NO: 1. By constructing a full-sib family group with a clear genetic background and combining grading comparison and genomics analysis, a stable and reliable pelteobagrus vachelli sex specificity marker is screened out, rapid and accurate sex identification in the fry stage is achieved, the method has great significance in reducing the breed conservation cost and improving the breed production efficiency, and the method is suitable for popularization and application of the pelteobagrus vachelli sex specificity marker and the pelteobagrus vachelli sex specificity marker. And key technical support is provided for sustainable development of the pelteobagrus fulvidraco breeding industry.

The present invention relates to an antibody or antigen-binding fragment thereof that specifically binds to porcine Y sperm, a composition comprising same, and use thereof. It was confirmed that treatment with the antibody or an antigen-binding fragment thereof, of the present invention, induced an aggregation reaction of Y chromosome sperm, thereby enabling easy distinction between X chromosome sperm and the Y chromosome sperm. Thus, pigs having a specific sex can be mass-produced, and pigs having a desired sex can be selectively produced, thereby contributing to planned breeding, breeding improvement, and management efficiency.