Research Project Portals

Follicular lymphoma

Follicular Lymphoma (FL) is a slow-growing cancer of the lymphatic system, which affects one in every three thousand individuals. While existing frontline therapies are effective at suppressing FL, it remains an incurable disease with a median survival of 8-10 years. A fifth of the patients develop resistance to the standard treatment within the first two years. Understanding the mechanisms facilitating resistance and identifying early molecular prognostic indicators remains a high priority.

FL tumors have a complex organization, and in addition to the transformed B cells contain a variety of other, non-malignant cell types. It has been demonstrated that the composition of such tumor microenvironment shows significant prognostic association, however the mechanisms and cellular interactions contributing to such association remain unclear. Some portions of the tumor microenvironment may reflect antitumor inflammatory response, while others can facilitate tumor growth. Investigating tumor-microenvironment interactions has been challenging because within the broad cell types that could be readily identified using existing experimental techniques there exist multiple subsets of cells, such as T cells or macrophage subtypes, that can often exert opposing effect.

To gain better understanding of the tumor-microenvironment interactions, we will use droplet-based single-cell transcriptomics to perform unbiased characterization of the FL tumors. Examining samples from patients with distinct treatment responses, as well as serial samples before and after chemotherapy, we will quantify cell type composition and capture distinct cell states within each of the identified cell types. Using such detailed descriptions we will identify principal modes of co-variation between FL tumor cells and different aspects of their microenvironment. We will then use more traditional bulk transcriptomic and immunohistochemistry assays to screen larger panels of available FL tumor samples to evaluate the association of the derived molecular signatures with the patient’s progression and response to treatment. In this way the work will aim to provide a detailed molecular description of FL tumor microenvironment and identify potential avenues for disrupting detrimental tumor-microenvironment interactions.

RESEARCH PROJECTS OF THE CENTER

Genome Russia Project

Genes are the basic “instruction book” for the cells that make up our bodies, and are made out of DNA. The DNA of a person is more than 99% the same as the DNA of any other unrelated person. But no two people have exactly the same DNA except identical twins. Differences in DNA are called genetic variations. They explain some of the physical differences among people, and partly explain why some people get diseases like cancer, diabetes, asthma, and depression, while others do not. Such diseases may also be affected by factors like diet, exercise, smoking, and pollution in the environment, which makes it hard to figure out which genes affect the diseases.

GWATCH - web-based genome browser for genome-wide association studies

GWATCH is a web-based genome browser designed to automate analysis, visualization and release of data from genome-wide association studies (GWAS) and whole genome sequence association studies of genetic epidemiological cohorts. For any association study, GWATCH allows cataloging and viewing of significant statistical results of association tests (p-values, odds ratios, hazard ratios and others) for single or multiple variants (SNP, indels, CNV), for single or multiple tests.

Genome-based Mycobacterium Tuberculosis Variation Database

Comparative genomics of Mycobacterium tuberculosis clinical strains spread in Russia – is one of the research projects conducted at Theodosius Dobzhansky Center for Genome Bioinformatics. We are studying genomic signatures associated with M. tuberculosis clinical and microbiological features. A Database of M. tuberculosis Genome Variations (GMTV) developed by our team, integrates clinical, epidemiological and microbiological information with genome variations based on whole genome sequencing data. This research is conducted in collaboration with St. Petersburg Research institute of Phthisiopulmonology and St. Petersburg Pasteur Institute, and supported by St. Petersburg State University and Russian Foundation for Basic Research (RFBR) grants.

Single-cell analysis of tumor-microenvironment interactions in follicular lymphoma

Follicular lymphoma

Follicular Lymphoma (FL) is a slow-growing cancer of the lymphatic system, which affects one in every three thousand individuals. While existing frontline therapies are effective at suppressing FL, it remains an incurable disease with a median survival of 8-10 years. A fifth of the patients develop resistance to the standard treatment within the first two years. Understanding the mechanisms facilitating resistance and identifying early molecular prognostic indicators remains a high priority.

Assembly, Annotation, and Comparative Analysis of Apomictic Boechera Species Genome

Principal investigator of the project Vladimir Brukhin

Apomixis is asexual way of plant reproduction through seeds, which could be found in more than 400 plant species representing almost 40 families. It is believed that apomixis evolved independently in several taxa from sexual ancestors. Apomixis could be considered as a developmental variation of sexual reproduction in which some steps are lost, reduced, deregulated or desynchronized (Fig.1). The main features of gametophytic apomixis are:

  • Avoidance of meiosis (apomeiosis);
  • Embryo formation via parthenogenesis;
  • Functional endosperm develops either autonomously or pseudogamously (central cell fertilized by sperm cell).

Theodosius Dobzhansky

Geneticist & Evolutionary Biologist
 
Theodosius Dobzhansky American geneticist and evolutionary biologist and a central figure in the field of evolutionary biology is recognized for...

Stephen J O'Brien

Chief Scientific Officer
 
I welcome you to the Site of the brand new Center of Genome Informatics at St Petersburg State University. The...

Vladimir Brukhin

Leading researcher, Deputy Director 
 
Vladimir Brukhin    Leading researcher, Deputy Director  Joined the Theodosius Dobzhansky Center for Genome Bioinformatics in February 2013 right after returning...

Lab's news

SPBU on web site published an article about achievement of the Center and published article.

September, 27 2019 ( Friday at 2pm: Dr. Kirill Vinnikov from Hawaii University (USA) and head of the lab at the Far Eastern Federal University (Vladivostok) "Exome sequencing of non-model species"