Cancer mtRNA Research

OncoMitoRNA-DB

Version 1.0

Cancer Mitochondrial Small RNA Database

The comprehensive database for cancer-related mitochondrial small RNAs across 33 cancer types, advancing our understanding of cancer biology and therapeutic targets.

33 Cancer Types
Comprehensive coverage across multiple cancer types including solid tumors, blood cancers, and rare malignancies
Mitochondrial Small RNAs

What are mtRNAs?

Mitochondrial small RNAs (mtRNAs) are a novel class of regulatory molecules that play crucial roles in cancer development and progression.

Mitochondrial Small RNAs: The Hidden Regulators

Mitochondrial small RNAs (mtRNAs) represent a fascinating and relatively new area of cancer research. These short RNA molecules, typically 15-30 nucleotides in length, are derived from mitochondrial transcripts and have emerged as important regulators of cellular processes in cancer.

Origin & Biogenesis

mtRNAs are processed from mitochondrial tRNAs, rRNAs, and mRNAs through specific cleavage mechanisms, creating diverse populations of small regulatory RNAs.

Cancer Targeting

Different cancer types exhibit unique mtRNA expression profiles, making them valuable biomarkers for diagnosis, prognosis, and therapeutic targeting.

Regulatory Networks

mtRNAs participate in complex regulatory networks, influencing gene expression, metabolic pathways, and cellular stress responses in cancer cells.

Therapeutic Potential

The cancer-specific expression patterns of mtRNAs present opportunities for developing novel therapeutic strategies and precision medicine approaches.

33 Cancer Types
100,000+ mtRNA Sequences
6 Sample Types
Database Features

OncoMitoRNA-DB Capabilities

A comprehensive platform providing advanced tools for exploring, analyzing, and understanding cancer-associated mitochondrial small RNAs across 33 cancer types.

Comprehensive mtRNA Catalog

Extensive collection of mitochondrial small RNAs from 33 cancer types, providing detailed annotations, expression data, and functional classifications for research and clinical applications.

  • 100,000+ mtRNA sequences
  • 33 cancer type coverage
  • Detailed genomic annotations

Advanced Search & Analysis

Powerful search capabilities with filtering options by RNA type, genomic location, expression levels, and cancer type specificity for targeted research investigations.

  • Multi-parameter filtering
  • Sequence-based search
  • Expression level analysis

Data Export & Integration

Flexible data export options in multiple formats including CSV, FASTA, BED, and GTF files for seamless integration with bioinformatics pipelines and analysis workflows.

  • Multiple export formats
  • API access available
  • Batch download support
Cancer Coverage

33 Cancer Types

Comprehensive coverage across 33 cancer types including solid tumors, blood cancers, and rare malignancies.

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Search OncoMitoRNA-DB V1.0

Explore cancer-related mitochondrial small RNAs across liver, lung, and breast cancers

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Locus ID Position Length Read Count GC Content Consensus Sequence

Download OncoMitoRNA-DB V1.0

Access comprehensive cancer mtRNA datasets for your research

mtRNA Sequences

FASTA format file containing all mitochondrial small RNA sequences with detailed annotations including location, type, and read counts.

File size: ~2.5 MB

BED Annotations

BED format file with genomic coordinates and annotations for all mtRNA loci, compatible with genome browsers and bioinformatics tools.

File size: ~1.8 MB

GTF Annotations

GTF format file with comprehensive gene feature annotations for mtRNAs, including detailed metadata and expression information.

File size: ~2.1 MB

OncoMitoRNA-DB Documentation

Comprehensive guide and visualizations for the cancer mitochondrial small RNA database

About Mitochondrial Small RNAs

Mitochondrial small RNAs (mtRNAs) are a class of regulatory non-coding RNAs derived from the mitochondrial genome. These molecules, typically 15-30 nucleotides in length, play crucial roles in cellular metabolism, apoptosis, and cancer progression. Recent studies have revealed that mtRNAs exhibit tissue-specific and cancer-type-specific expression patterns, making them valuable biomarkers for cancer diagnosis and prognosis.

Our database contains comprehensive mtRNA expression profiles across 33 different cancer types from The Cancer Genome Atlas (TCGA), providing researchers with unprecedented access to mitochondrial transcriptomic data for cancer research.

How to Use OncoMitoRNA-DB

Database Search

Navigate to the Database tab to explore mtRNA sequences with powerful filtering options:

  • Locus ID Search: Find specific mtRNA sequences by their unique identifiers
  • Cancer Type Filter: Select from 33 TCGA cancer types (BRCA, LUAD, etc.)
  • Sample Type Filter: Choose between Cancer, Normal, or All sample types
  • Sequence Parameters: Filter by length range and minimum read count

Expression Analysis

Click on any mtRNA Locus ID to view detailed expression profiles:

  • Grouped Bar Charts: Compare expression across cancer types and sample types
  • Sequence Details: View GC content, genomic position, and colorized sequences
  • Summary Statistics: Explore total and maximum expression values
  • Interactive Visualization: Hover for detailed expression values

Data Export

Export filtered results in multiple formats for downstream analysis:

  • CSV Format: Tabular data with all metadata and expression values
  • FASTA Format: Sequence data for bioinformatics pipelines
  • BED/GTF Files: Genomic annotations for genome browsers
  • Bulk Downloads: Access complete datasets from the Downloads page

Database Schema

Each mtRNA record in the database contains the following information:

Basic Information

  • Locus ID: Unique identifier for each mtRNA sequence
  • Genomic Position: Chromosome, start, end coordinates, and strand
  • Sequence Length: Length of the consensus sequence in nucleotides
  • GC Content: Percentage of guanine and cytosine bases

Expression Data

  • Read Count: Total number of sequencing reads supporting the mtRNA
  • TCGA Expression: Normalized expression values across cancer types
  • Sample Types: Primary Tumor, Normal Tissue, Metastatic, Recurrent, Blood Derived
  • Cancer Types: 33 TCGA cancer type abbreviations

API Usage Guide

OncoMitoRNA-DB provides a RESTful API for programmatic access to the database. All API endpoints return JSON responses and support CORS for cross-origin requests.

Base URL

https://mitorna.org/api/

Available Endpoints

1. Get Database Statistics

GET
/api/stats

Description: Returns comprehensive database statistics including total records, cancer types, sample types, and distribution data.

curl -X GET "https://mitorna.org/api/stats"

2. Search Database

GET/POST
/api/search

Description: Search and filter mtRNA sequences with various parameters.

Parameters:

  • locus_id - Search by specific mtRNA locus ID
  • cancer_type - Filter by cancer type (e.g., BRCA, LUAD)
  • sample_type - Filter by sample type (Cancer/Normal/All)
  • length_range - Filter by sequence length (15-20/21-25/26-30)
  • min_reads - Minimum read count threshold
  • page - Page number for pagination (default: 1)
  • per_page - Results per page (default: 20, max: 100)
curl -X GET "https://mitorna.org/api/search?cancer_type=BRCA&min_reads=1000&page=1&per_page=20"

3. Get Cancer Types

GET
/api/cancer-types

Description: Returns available cancer types and sample types with their counts.

curl -X GET "https://mitorna.org/api/cancer-types"

4. Get All Data

GET
/api/all-data

Description: Retrieve all mtRNA records with pagination support.

Parameters: page, per_page

curl -X GET "https://mitorna.org/api/all-data?page=1&per_page=50"

5. Export Data

GET
/api/export/{format}

Description: Export filtered search results in specified format.

Formats: csv, fasta

Parameters: Same as search endpoint

curl -X GET "https://mitorna.org/api/export/csv?cancer_type=LUAD&min_reads=500" -o results.csv

Response Format

All API responses follow this standard JSON format:

{
  "success": true,
  "data": {
    // Response data
  },
  "error": null // Only present if success is false
}

Python Example

import requests
import json

# Search for BRCA mtRNAs with high expression
url = "https://mitorna.org/api/search"
params = {
    "cancer_type": "BRCA",
    "min_reads": 1000,
    "page": 1,
    "per_page": 50
}

response = requests.get(url, params=params)
data = response.json()

if data["success"]:
    results = data["data"]["results"]
    print(f"Found {len(results)} mtRNAs")
    for mtrna in results:
        print(f"{mtrna['locus_id']}: {mtrna['total_reads']} reads")
else:
    print(f"Error: {data['error']}")

Technical Information

The OncoMitoRNA-DB is built using modern web technologies to ensure fast, reliable access to mitochondrial transcriptomic data:

  • Data Source: TCGA (The Cancer Genome Atlas) pan-cancer dataset
  • Processing Pipeline: Standardized bioinformatics workflow for mtRNA identification and quantification
  • Quality Control: Stringent filtering for read count and sequence quality
  • API Access: RESTful endpoints for programmatic data access
  • Cross-Platform: Compatible with all modern web browsers

Contact Us

Get in touch with the OncoMitoRNA-DB team

Shaoqiu Chen

Principal Investigator

John A. Burns School of Medicine

University of Hawai'i at Mānoa

For questions about the database, data access, collaboration opportunities, or technical support, please don't hesitate to reach out.