犬の臓リンパ性リンパ性多発症,複合性多発症,胞性肉腫,およびストロマル肉腫における遺伝子発現の全転写体分析
Cleide Spröhnle-Barrera1, Rachel Allavena1, Chiara Palmieri1
1School of Veterinary Science, The University of Queensland, Gatton Campus, Gatton, QLD 4343, Australia.
Animals : an open access journal from MDPI
|February 13, 2026
まとめ
以前は一緒にグループ化されていた犬の臓の結節は,今では別々の存在です. この研究は,重要な遺伝子発現の違いを明らかにし,犬の臓腫瘍の発達と潜在的な新しい治療法についての洞察を提供します.
科学分野:
- 獣医学病理学 獣医学病理学について
- 分子腫瘍学 分子腫瘍学
- 比較ゲノミクスとは
背景:
- 歴史的に"フィブロヒスティオサイト"と呼ばれた犬の節結節は,現在ではリンパ性多発症,インドレンタリンパ腫,複合性多発症,およびストロマール・サルコマのような異なる実体として認識されています.
- これらの犬のの病変の分子基盤は,特にゲノムおよびトランスクリプトームレベルでは,ほとんど未調査のままです.
研究 の 目的:
- 4つの異なる犬の臓結節のトランスクリプトミックの風景を線引きし,比較する.
- 犬の臓病変およびその進行に関連した異なる発現遺伝子 (DEGs) を特定する.
主な方法:
- RNAシーケンシングは,リンパ性多発性症,複合性多発性症,ヒスティオサイト性肉腫,ストロマル肉腫,および正常なのコントロールを持つ犬からのホルマリン固定,パラフィン埋め込み (FFPE) の組織サンプルで行われました.
- 変異性遺伝子発現プロファイリングは,病変型と正常な臓組織のトランスクリプトミックのデータを比較するために使用されました.
主要な成果:
- 犬の胞ノードルと正常な臓の間で,47の異なる発現遺伝子 (DEGs) が特定されました.
- 39 DEGsは,腫瘍発生と転移に関与する遺伝子を含め,4つの臓病変型の中で有意に変化しました.
- 特定された主要なDEGには,CSRP1, SLC40A1, C1QA, C1QC, DLA-12, FTL, FXYD6, MPEG1, OAS3, CSF1, JMJD6, MLC1, ERAS, MOV10L1, LOC102152143, COL4A1, COL4A2, COL12A1, TC NOH3, PLOD2, CPXM2, MRC1, GALNT5, TIMP1, TFPI2などが含まれています.
結論:
- 犬の節結節における調節不良の遺伝子発現は,ストロマ細胞とマクロファージの活性化を誘導し,悪性変異に寄与する可能性があります.
- これらのトランスクリプトミックの洞察は,犬の臓腫瘍発生の理解を進める.
- 発見は,獣医腫瘍学における診断の正確性,予後評価,および標的治療の開発を向上させる可能性がある.
関連する概念動画
01:03Rous Sarcoma Virus (RSV) and Cancer
6.4K
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
6.4K
01:42What is Gene Expression?
197.1K
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
197.1K
01:36What is Gene Expression?
11.6K
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
11.6K
02:51mRNA Stability and Gene Expression
6.7K
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability
6.7K
02:51mRNA Stability and Gene Expression
3.5K
3.5K
01:58Cell Specific Gene Expression
16.6K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.6K